Sickle-cell disease is a genetic disorder that causes abnormal structure of hemo
Sickle-cell disease is a genetic disorder that causes abnormal structure of hemoglobin molecule and interferes with its ability to transport oxygen. Although the sickle-cell disease is lethal if not treated, in some regions sickle-cell allele can reach frequencies as high as 15/20%. How can such a harmful allele be so common? Begin contributing to the discussions as soon as you study Chapter materials. Your original post should be a minimum of 150 words. Include examples in your discussion. Correct grammar and spelling are required.
